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Finding the Fourth Proportional to 9,993.16, 13,789.84 and 5,516.92

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Solution

The fourth proportional to 9,993.16, 13,789.84 and 5,516.92 is: 7,612.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,993.16 : 13,789.84 = 5,516.92 : x
  2. Step 2: Convert to fraction form
    9,993.16/13,789.84 = 5,516.92/x
  3. Step 3: Cross multiply
    9,993.16x = 13,789.84 × 5,516.92
  4. Step 4: Simplify right side
    9,993.16x = 76,077,444.09
  5. Step 5: Solve for x
    x = 76,077,444.09/9,993.16
  6. Step 6: Final answer
    x = 7,612.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.